ISSN 2756-3251
Advanced Journal of Environmental Science and Technology ISSN 7675-1686 Vol. 9 (1), pp. 001-014, January, 2018. © International Scholars Journals
Full Length Research Paper
Impact of urbanisation on the Mingosso watershed in the Yaounde periurban zone
M. G. Ewodo1*, C. Ekwelgen2, F. Ntep1 and G. E. Ekodeck1
1Faculty of Science, Earth Sciences Department, Laboratory of Geotechnic and Hydrotechnic, B. P. 812 Yaoundé –Cameroon.
2National Advanced School of the public work of Yaoundé, B. P. 12093 Yaounde, Cameroon.
Accepted 20 August, 2017
Abstract
In the peripheral quarters of Yaounde city, population settlement is not regulated according to particular standards of land-use. The Mingosso watershed, which covers a surface area of 3.856 km² and which is administratively located in the Yaounde 6th district, was studied to identify the impacts of this type of settlement upon the flow and the quality of groundwater. The physico-chemical variation of groundwater, a bacteriological analysis of water and a survey named “water-population-habitat” were carried out. The population growth rate between 2000 and 2005 was 24.55%. Without town planning, 91.2% of the population settled within the watershed, are not connected to piped supply network of drinkable water, leading to an increasing demand for groundwater wells and the degradation of overall aquifer quality. Groundwater has a diffuse mineralization, which is higher in densely populated zones than in zones under construction with a low population density.
Keys words: Urbanisation, groundwater, Yaounde, periurban zone, pollution, bio-indicator.